David L. Kaplan, MD

September 14, 2005

Acute allergic reactions from the bites of the common dog tick, Dermacentor variabilis, resemble reactions from bites of mosquitoes and other insects. Following removal of the tick from the patient's back, this inflamed, pruritic plaque developed at the site. Once all parts of the tick are removed, these bites generally respond to topical corticosteroids.

September 14, 2005

A 32-year-old woman with insulin-dependent diabetes noted a painful erosion at the site of "the rose tattoo," which she had gotten 5 days before.

July 01, 2005

A 5-year-old girl is brought for evaluation of an asymptomatic inflamed streak on one leg that has been present for several weeks. She is otherwise healthy and takes no medications.

June 01, 2005

A 45-year-old woman presents for evaluation of increased pigmentation on the sides of her neck. The discoloration has been present for at least several months and is asymptomatic.

May 01, 2005

A slowly progressive rash; pruritic lesions in the antecubital fossae; circular scaling, erythematous plaques--can you identify the disorders pictured here?

April 15, 2005

Is this acneform eruption on a middle-aged woman’s face perioraldermatitis? Rosacea? Pyoderma faciale? Is this pruritic rash related to ayoung woman’s tanning salon visits? Scrutinize the photos, make yourdecisions, and compare your answers with an expert’s.

April 01, 2005

A 39-year-old woman has a tender vesicular rash on her finger. A similar rash that had appeared on the same finger 1 year earlier responded slowly to a course of oral cephalexin

July 01, 2004

This crusted eroded area on the lower lip of a 67-year-old man has been presentfor several months.Which of the following statements are true?A. This condition preferentially affects the lower lip.B. It is more common in women.C. It is more common in immunocompromised patients.D. It is more likely to metastasize than similar lesions on nonmucosal surfaces.E. 5-Fluorouracil is contraindicated in this location.

May 01, 2004

For several months, a 49-year-old woman has had asymptomatic loss of pigmenton her shins. She has no history of injury to the area.What is your clinical impression?

March 01, 2002

Painful erosions developed on the sole of a 14-year-old girl's foot several weeksearlier. Within the last few days, the condition has spread to the other sole.The patient is otherwise healthy and takes no medications. She enjoys playingsoccer and has no history of trauma.